Saleh F M, Sallam H N, Abdel-Rahman H, Souka A R, El-Sahwi S Y, Toppozada H K
Contraception. 1983 Jul;28(1):41-51. doi: 10.1016/s0010-7824(83)80004-3.
Ten Egyptian women who were using the injectable contraceptive norethisterone oenanthate (NET-OEN) for at least 6 months were monitored weekly for a period of 12 weeks by measuring 3 pituitary hormones (FSH, LH and prolactin) and 2 ovarian hormones (oestradiol 17-B and progesterone). It was concluded that NET-OEN is a strong ovulation inhibitor, at least after its use for 6 months. Prolactin levels were depressed and this is in contradiction with the findings in rats.